SELECT 
  product_descriptions.product_id, 
  product_descriptions.short_description, 
  IF(
    product_descriptions.short_description = '' 
    OR product_descriptions.short_description IS NULL, 
    product_descriptions.full_description, 
    ''
  ) AS full_description 
FROM 
  product_descriptions 
WHERE 
  product_descriptions.product_id IN (
    95114, 99478, 136598, 98587, 93064, 
    90460, 99480, 91782, 92017, 91783, 
    91777, 95110, 95716, 92365, 131318, 
    131312, 98586, 104674, 93059, 104677, 
    98584, 92030, 127795, 93062, 92461, 
    92031, 92465, 91357, 92462, 92367, 
    93063, 95702, 93065, 97069, 93066, 
    92464, 123544, 93058, 97078, 189132, 
    104676, 91356, 96730, 97156, 123546, 
    104675, 92463, 95107, 131316, 131320, 
    95072, 93054, 104673, 127897, 97071, 
    136415, 93061
  ) 
  AND product_descriptions.lang_code = 'en'

Query time 0.00654

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "47.08"
    },
    "table": {
      "table_name": "product_descriptions",
      "access_type": "range",
      "possible_keys": [
        "PRIMARY",
        "product_id"
      ],
      "key": "PRIMARY",
      "used_key_parts": [
        "product_id",
        "lang_code"
      ],
      "key_length": "11",
      "rows_examined_per_scan": 57,
      "rows_produced_per_join": 57,
      "filtered": "100.00",
      "cost_info": {
        "read_cost": "41.39",
        "eval_cost": "5.70",
        "prefix_cost": "47.09",
        "data_read_per_join": "290K"
      },
      "used_columns": [
        "product_id",
        "lang_code",
        "short_description",
        "full_description"
      ],
      "attached_condition": "((`goimagine`.`product_descriptions`.`product_id` in (95114,99478,136598,98587,93064,90460,99480,91782,92017,91783,91777,95110,95716,92365,131318,131312,98586,104674,93059,104677,98584,92030,127795,93062,92461,92031,92465,91357,92462,92367,93063,95702,93065,97069,93066,92464,123544,93058,97078,189132,104676,91356,96730,97156,123546,104675,92463,95107,131316,131320,95072,93054,104673,127897,97071,136415,93061)) and (`goimagine`.`product_descriptions`.`lang_code` = 'en'))"
    }
  }
}