SELECT 
  cscart_product_descriptions.product_id, 
  cscart_product_descriptions.meta_keywords, 
  cscart_product_descriptions.meta_description, 
  cscart_product_descriptions.search_words, 
  cscart_product_descriptions.promo_text 
FROM 
  cscart_product_descriptions 
WHERE 
  cscart_product_descriptions.product_id IN (
    51088, 51087, 22713, 51086, 51089, 51090, 
    51092, 51093, 22714, 51091, 51095, 
    51103, 22712, 51105, 51102, 51101, 
    51155, 51154, 51153, 51152, 21, 51158, 
    51157, 51156, 53, 51160, 51159, 51297, 
    51296, 139, 51300, 51299, 51298, 51304, 
    51303, 51302, 51301, 138, 51443, 51309, 
    51308, 51307, 51306, 51305, 129, 51318, 
    51317, 51316, 51, 51319, 51323, 51322, 
    51321, 51320, 50, 51324, 51497, 51498, 
    51564, 51568, 51569, 51570, 51571, 
    51572, 51573, 51565, 51574, 51575, 
    51576, 51577, 51566, 51578, 51579, 
    51580, 51581, 51567, 51582, 51583, 
    51584, 51585, 51586
  ) 
  AND cscart_product_descriptions.lang_code = 'ru'

Query time 0.00146

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "56.71"
    },
    "table": {
      "table_name": "cscart_product_descriptions",
      "access_type": "range",
      "possible_keys": [
        "PRIMARY",
        "product_id"
      ],
      "key": "PRIMARY",
      "used_key_parts": [
        "product_id",
        "lang_code"
      ],
      "key_length": "9",
      "rows_examined_per_scan": 81,
      "rows_produced_per_join": 81,
      "filtered": "100.00",
      "index_condition": "((`test_uchur_k`.`cscart_product_descriptions`.`product_id` in (51088,51087,22713,51086,51089,51090,51092,51093,22714,51091,51095,51103,22712,51105,51102,51101,51155,51154,51153,51152,21,51158,51157,51156,53,51160,51159,51297,51296,139,51300,51299,51298,51304,51303,51302,51301,138,51443,51309,51308,51307,51306,51305,129,51318,51317,51316,51,51319,51323,51322,51321,51320,50,51324,51497,51498,51564,51568,51569,51570,51571,51572,51573,51565,51574,51575,51576,51577,51566,51578,51579,51580,51581,51567,51582,51583,51584,51585,51586)) and (`test_uchur_k`.`cscart_product_descriptions`.`lang_code` = 'ru'))",
      "cost_info": {
        "read_cost": "48.61",
        "eval_cost": "8.10",
        "prefix_cost": "56.71",
        "data_read_per_join": "369K"
      },
      "used_columns": [
        "product_id",
        "lang_code",
        "meta_keywords",
        "meta_description",
        "search_words",
        "promo_text"
      ]
    }
  }
}