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 (
    92533, 92892, 93798, 93799, 93800, 93801, 
    93802, 93803, 93804, 93805, 93806, 
    93807, 93808, 93809, 93810, 93811, 
    93812, 93813, 93814, 93815, 93816, 
    93817, 93818, 94380, 94438, 94463, 
    94464, 94465, 94466, 94467, 94468, 
    94469, 94470, 94471, 94472, 94473, 
    94474, 94475, 94476, 94477, 94478, 
    94479, 94480, 94481, 94482, 94483, 
    94811, 94812, 95706, 95707, 95708, 
    95709, 95710, 95711, 95712, 95713, 
    95714, 95715, 95716, 95717, 95718, 
    95719, 95720, 95721, 95722, 95723, 
    95724, 95725, 95726, 95727, 96132, 
    96133, 96134, 96135, 96136, 96137, 
    96138, 96139, 96140, 96141, 96142, 
    96143, 96144, 96145, 96146, 96147, 
    96148, 96149, 96150, 96151, 96152, 
    96157, 96158, 96159, 96160, 96161
  ) 
  AND cscart_product_descriptions.lang_code = 'en'

Query time 0.00101

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 (92533,92892,93798,93799,93800,93801,93802,93803,93804,93805,93806,93807,93808,93809,93810,93811,93812,93813,93814,93815,93816,93817,93818,94380,94438,94463,94464,94465,94466,94467,94468,94469,94470,94471,94472,94473,94474,94475,94476,94477,94478,94479,94480,94481,94482,94483,94811,94812,95706,95707,95708,95709,95710,95711,95712,95713,95714,95715,95716,95717,95718,95719,95720,95721,95722,95723,95724,95725,95726,95727,96132,96133,96134,96135,96136,96137,96138,96139,96140,96141,96142,96143,96144,96145,96146,96147,96148,96149,96150,96151,96152,96157,96158,96159,96160,96161)) and (`nuie_scalesta_net`.`cscart_product_descriptions`.`lang_code` = 'en'))"
    }
  }
}