SELECT 
  cscart_settings_objects.object_id as object_id, 
  name, 
  section_id, 
  section_tab_id, 
  type, 
  position, 
  is_global, 
  cscart_settings_objects.name as description, 
  (
    CASE WHEN company_values.object_id IS NOT NULL THEN company_values.value WHEN storefront_values.object_id IS NOT NULL THEN storefront_values.value ELSE cscart_settings_objects.value END
  ) AS value 
FROM 
  cscart_settings_objects 
  LEFT JOIN cscart_settings_vendor_values AS company_values ON company_values.object_id = cscart_settings_objects.object_id 
  AND company_values.company_id = 1 
  AND company_values.storefront_id = 1 
  LEFT JOIN cscart_settings_vendor_values AS storefront_values ON storefront_values.object_id = cscart_settings_objects.object_id 
  AND storefront_values.storefront_id = 1 
  AND storefront_values.company_id = 0 
WHERE 
  1 
  AND (
    FIND_IN_SET(
      'STOREFRONT', cscart_settings_objects.edition_type
    ) 
    OR FIND_IN_SET(
      'VENDOR', cscart_settings_objects.edition_type
    ) 
    OR FIND_IN_SET(
      'ROOT', cscart_settings_objects.edition_type
    ) 
    OR FIND_IN_SET(
      'ULT:STOREFRONT', cscart_settings_objects.edition_type
    ) 
    OR FIND_IN_SET(
      'ULT:VENDOR', cscart_settings_objects.edition_type
    ) 
    OR FIND_IN_SET(
      'ULT:ROOT', cscart_settings_objects.edition_type
    )
  ) 
  AND cscart_settings_objects.type <> 'H' 
ORDER BY 
  cscart_settings_objects.position

Query time 0.00637

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "1218.97"
    },
    "ordering_operation": {
      "using_filesort": true,
      "cost_info": {
        "sort_cost": "671.40"
      },
      "nested_loop": [
        {
          "table": {
            "table_name": "cscart_settings_objects",
            "access_type": "ALL",
            "rows_examined_per_scan": 746,
            "rows_produced_per_join": 671,
            "filtered": "90.00",
            "cost_info": {
              "read_cost": "10.45",
              "eval_cost": "67.14",
              "prefix_cost": "77.59",
              "data_read_per_join": "529K"
            },
            "used_columns": [
              "object_id",
              "edition_type",
              "name",
              "section_id",
              "section_tab_id",
              "type",
              "value",
              "position",
              "is_global"
            ],
            "attached_condition": "(((0 <> find_in_set('STOREFRONT',`test_uchur_k`.`cscart_settings_objects`.`edition_type`)) or (0 <> find_in_set('VENDOR',`test_uchur_k`.`cscart_settings_objects`.`edition_type`)) or (0 <> find_in_set('ROOT',`test_uchur_k`.`cscart_settings_objects`.`edition_type`)) or (0 <> find_in_set('ULT:STOREFRONT',`test_uchur_k`.`cscart_settings_objects`.`edition_type`)) or (0 <> find_in_set('ULT:VENDOR',`test_uchur_k`.`cscart_settings_objects`.`edition_type`)) or (0 <> find_in_set('ULT:ROOT',`test_uchur_k`.`cscart_settings_objects`.`edition_type`))) and (`test_uchur_k`.`cscart_settings_objects`.`type` <> 'H'))"
          }
        },
        {
          "table": {
            "table_name": "company_values",
            "access_type": "eq_ref",
            "possible_keys": [
              "PRIMARY",
              "storefront_id",
              "company_id"
            ],
            "key": "PRIMARY",
            "used_key_parts": [
              "object_id",
              "company_id",
              "storefront_id"
            ],
            "key_length": "11",
            "ref": [
              "test_uchur_k.cscart_settings_objects.object_id",
              "const",
              "const"
            ],
            "rows_examined_per_scan": 1,
            "rows_produced_per_join": 671,
            "filtered": "100.00",
            "cost_info": {
              "read_cost": "167.85",
              "eval_cost": "67.14",
              "prefix_cost": "312.58",
              "data_read_per_join": "15K"
            },
            "used_columns": [
              "object_id",
              "company_id",
              "storefront_id",
              "value"
            ]
          }
        },
        {
          "table": {
            "table_name": "storefront_values",
            "access_type": "eq_ref",
            "possible_keys": [
              "PRIMARY",
              "storefront_id",
              "company_id"
            ],
            "key": "PRIMARY",
            "used_key_parts": [
              "object_id",
              "company_id",
              "storefront_id"
            ],
            "key_length": "11",
            "ref": [
              "test_uchur_k.cscart_settings_objects.object_id",
              "const",
              "const"
            ],
            "rows_examined_per_scan": 1,
            "rows_produced_per_join": 671,
            "filtered": "100.00",
            "cost_info": {
              "read_cost": "167.85",
              "eval_cost": "67.14",
              "prefix_cost": "547.57",
              "data_read_per_join": "15K"
            },
            "used_columns": [
              "object_id",
              "company_id",
              "storefront_id",
              "value"
            ]
          }
        }
      ]
    }
  }
}