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 (
    92173, 92174, 92395, 92396, 92397, 92398, 
    92399, 84250, 84255, 87578, 87579, 
    87593, 87594, 87608, 87609, 88151, 
    88153, 88789, 88790, 92198, 92199, 
    92200, 92201, 92202, 92444, 92445, 
    92446, 92447, 87653, 87667, 87674, 
    87681, 87702, 87710, 87711, 87724, 
    87725, 92146, 87652, 87658, 87666, 
    87672, 87673, 87679, 87680, 87686, 
    87701, 87707, 87709, 87721, 87723, 
    87735, 88694, 88695, 88741, 88742, 
    92203, 92449, 92168, 86857, 85037, 
    91870, 91869, 91871, 91872, 91873, 
    91874, 91875, 85038, 92458, 92459, 
    92460, 92461, 92462, 92463, 92464, 
    86892, 88149, 88587, 92211, 92216, 
    92218, 92219, 92220, 92221, 92222, 
    92224, 92225, 92226, 92467, 84241, 
    87234, 87235, 87236, 87239, 87240
  ) 
  AND cscart_product_descriptions.lang_code = 'en'

Query time 0.00130

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 (92173,92174,92395,92396,92397,92398,92399,84250,84255,87578,87579,87593,87594,87608,87609,88151,88153,88789,88790,92198,92199,92200,92201,92202,92444,92445,92446,92447,87653,87667,87674,87681,87702,87710,87711,87724,87725,92146,87652,87658,87666,87672,87673,87679,87680,87686,87701,87707,87709,87721,87723,87735,88694,88695,88741,88742,92203,92449,92168,86857,85037,91870,91869,91871,91872,91873,91874,91875,85038,92458,92459,92460,92461,92462,92463,92464,86892,88149,88587,92211,92216,92218,92219,92220,92221,92222,92224,92225,92226,92467,84241,87234,87235,87236,87239,87240)) and (`nuie_scalesta_net`.`cscart_product_descriptions`.`lang_code` = 'en'))"
    }
  }
}