SELECT 
  cscart_product_descriptions.product_id, 
  cscart_product_descriptions.short_description, 
  IF(
    cscart_product_descriptions.short_description = '' 
    OR cscart_product_descriptions.short_description IS NULL, 
    cscart_product_descriptions.full_description, 
    ''
  ) AS full_description 
FROM 
  cscart_product_descriptions 
WHERE 
  cscart_product_descriptions.product_id IN (
    98102, 98103, 98104, 98105, 98106, 98107, 
    98108, 98109, 98110, 98111, 98112, 
    98113, 98114, 98115, 98116, 98117, 
    98118, 98119, 98120, 98121, 98122, 
    98123, 98124, 98125, 98126, 98127, 
    98128, 98129, 98130, 98131, 98132, 
    98133, 98134, 98135, 98136, 98137, 
    98169, 98170, 98171, 98172, 98173, 
    98174, 98175, 98176, 98177, 98178, 
    98179, 98180, 98181, 98182, 98183, 
    98184, 98185, 98186, 98187, 98188, 
    98189, 98190, 98191, 98200, 98201, 
    98202, 98203, 98204, 98205, 98206, 
    98207, 98327, 98328, 98329, 98330, 
    98331, 98332, 98333, 98334, 98335, 
    98336, 98337, 98338, 98339, 98340, 
    98341, 98342, 98343, 98344, 98345, 
    98346, 98347, 98348, 98349, 98350, 
    98351, 98352, 98353, 98354, 98355
  ) 
  AND cscart_product_descriptions.lang_code = 'en'

Query time 0.00149

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "43.24"
    },
    "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": 96,
      "rows_produced_per_join": 96,
      "filtered": "100.00",
      "cost_info": {
        "read_cost": "33.64",
        "eval_cost": "9.60",
        "prefix_cost": "43.24",
        "data_read_per_join": "366K"
      },
      "used_columns": [
        "product_id",
        "lang_code",
        "short_description",
        "full_description"
      ],
      "attached_condition": "((`nuie_scalesta_net`.`cscart_product_descriptions`.`product_id` in (98102,98103,98104,98105,98106,98107,98108,98109,98110,98111,98112,98113,98114,98115,98116,98117,98118,98119,98120,98121,98122,98123,98124,98125,98126,98127,98128,98129,98130,98131,98132,98133,98134,98135,98136,98137,98169,98170,98171,98172,98173,98174,98175,98176,98177,98178,98179,98180,98181,98182,98183,98184,98185,98186,98187,98188,98189,98190,98191,98200,98201,98202,98203,98204,98205,98206,98207,98327,98328,98329,98330,98331,98332,98333,98334,98335,98336,98337,98338,98339,98340,98341,98342,98343,98344,98345,98346,98347,98348,98349,98350,98351,98352,98353,98354,98355)) and (`nuie_scalesta_net`.`cscart_product_descriptions`.`lang_code` = 'en'))"
    }
  }
}