SELECT 
  * 
FROM 
  cscart_product_feature_variants 
WHERE 
  variant_id IN (
    1462, 1, 3, 158, 366, 300, 289, 125, 126, 
    148, 367, 281, 311, 1830, 1826, 1463, 
    1465, 290, 160, 302, 155, 122, 121, 127, 
    1349, 149, 120, 123, 234, 146, 50, 57, 
    58, 147, 9, 11, 10, 8, 7, 43, 22, 26, 1453, 
    267, 287, 294, 262, 162, 263, 110, 1833, 
    265, 1305, 282, 111, 1832, 1300, 54, 
    1466, 304, 303, 237, 238, 98, 232, 170, 
    154, 165
  )

Query time 0.00070

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "47.61"
    },
    "table": {
      "table_name": "cscart_product_feature_variants",
      "access_type": "range",
      "possible_keys": [
        "PRIMARY"
      ],
      "key": "PRIMARY",
      "used_key_parts": [
        "variant_id"
      ],
      "key_length": "3",
      "rows_examined_per_scan": 68,
      "rows_produced_per_join": 68,
      "filtered": "100.00",
      "index_condition": "(`test_uchur_k`.`cscart_product_feature_variants`.`variant_id` in (1462,1,3,158,366,300,289,125,126,148,367,281,311,1830,1826,1463,1465,290,160,302,155,122,121,127,1349,149,120,123,234,146,50,57,58,147,9,11,10,8,7,43,22,26,1453,267,287,294,262,162,263,110,1833,265,1305,282,111,1832,1300,54,1466,304,303,237,238,98,232,170,154,165))",
      "cost_info": {
        "read_cost": "40.81",
        "eval_cost": "6.80",
        "prefix_cost": "47.61",
        "data_read_per_join": "105K"
      },
      "used_columns": [
        "variant_id",
        "feature_id",
        "url",
        "color",
        "position",
        "abt__ut2_color_style",
        "abt__ut2_multicolor"
      ]
    }
  }
}