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 (
    93353, 93354, 93355, 93750, 93751, 93752, 
    93794, 93848, 93849, 93886, 93887, 
    93888, 93889, 93890, 93891, 93892, 
    93893, 94484, 94486, 94487, 94488, 
    94489, 94490, 94491, 94493, 94494, 
    94496, 94499, 94501, 94505, 94506, 
    94507, 94509, 94511, 94512, 94513, 
    94515, 94516, 94517, 94518, 94519, 
    94520, 94521, 94522, 94523, 94524, 
    94525, 94526, 94527, 94528, 94529, 
    94530, 94531, 94532, 94533, 94534, 
    94535, 94536, 94537, 94538, 94539, 
    94540, 94541, 94542, 94543, 94544, 
    94545, 94546, 94547, 94548, 94549, 
    94550, 94551, 94552, 94553, 94554, 
    94555, 94556, 94557, 94558, 94559, 
    94560, 94561, 94562, 94563, 94564, 
    94565, 94566, 94567, 94568, 94569, 
    94570, 94571, 94572, 94573, 94575
  ) 
  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 (93353,93354,93355,93750,93751,93752,93794,93848,93849,93886,93887,93888,93889,93890,93891,93892,93893,94484,94486,94487,94488,94489,94490,94491,94493,94494,94496,94499,94501,94505,94506,94507,94509,94511,94512,94513,94515,94516,94517,94518,94519,94520,94521,94522,94523,94524,94525,94526,94527,94528,94529,94530,94531,94532,94533,94534,94535,94536,94537,94538,94539,94540,94541,94542,94543,94544,94545,94546,94547,94548,94549,94550,94551,94552,94553,94554,94555,94556,94557,94558,94559,94560,94561,94562,94563,94564,94565,94566,94567,94568,94569,94570,94571,94572,94573,94575)) and (`nuie_scalesta_net`.`cscart_product_descriptions`.`lang_code` = 'en'))"
    }
  }
}