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 (
    51083, 22715, 51082, 51085, 51081, 51088, 
    51087, 22713, 51086, 51089, 51090, 
    51092, 51093, 22714, 51091, 51095, 
    51096, 51097, 51098, 51100, 51099, 
    22716, 51103, 22712, 51105, 51102, 
    51101, 51205, 51204, 51203, 51202, 
    125, 51209, 51208, 51207, 51206, 124, 
    51221, 137, 51224, 51223, 51232, 12, 
    51238, 51237, 51236, 51235, 51234, 
    51233, 51246, 51245, 51244, 35, 51248, 
    51247, 51256, 51255, 51254, 33, 32, 
    51265, 51264, 51263, 51262, 51261, 
    51260, 51259, 110, 51281, 51280, 51279, 
    51278, 51282, 7, 51289, 51288, 51287, 
    51286, 51285, 51284, 51283, 8, 51294, 
    51293, 51291, 51290, 94
  ) 
  AND cscart_product_descriptions.lang_code = 'ru'

Query time 0.00186

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "60.91"
    },
    "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": 87,
      "rows_produced_per_join": 87,
      "filtered": "100.00",
      "index_condition": "((`test_uchur_k`.`cscart_product_descriptions`.`product_id` in (51083,22715,51082,51085,51081,51088,51087,22713,51086,51089,51090,51092,51093,22714,51091,51095,51096,51097,51098,51100,51099,22716,51103,22712,51105,51102,51101,51205,51204,51203,51202,125,51209,51208,51207,51206,124,51221,137,51224,51223,51232,12,51238,51237,51236,51235,51234,51233,51246,51245,51244,35,51248,51247,51256,51255,51254,33,32,51265,51264,51263,51262,51261,51260,51259,110,51281,51280,51279,51278,51282,7,51289,51288,51287,51286,51285,51284,51283,8,51294,51293,51291,51290,94)) and (`test_uchur_k`.`cscart_product_descriptions`.`lang_code` = 'ru'))",
      "cost_info": {
        "read_cost": "52.21",
        "eval_cost": "8.70",
        "prefix_cost": "60.91",
        "data_read_per_join": "396K"
      },
      "used_columns": [
        "product_id",
        "lang_code",
        "meta_keywords",
        "meta_description",
        "search_words",
        "promo_text"
      ]
    }
  }
}