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 (
    411583, 411596, 411601, 411602, 411622, 
    412155, 412166, 412184, 412200, 412954, 
    413476, 414223, 414250, 414786, 414800, 
    414813, 414826, 415560, 416136, 416137, 
    417424, 417445, 417469, 418178
  ) 
  AND product_descriptions.lang_code = 'en'

Query time 0.00110

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "19.89"
    },
    "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": 24,
      "rows_produced_per_join": 24,
      "filtered": "100.00",
      "cost_info": {
        "read_cost": "17.49",
        "eval_cost": "2.40",
        "prefix_cost": "19.89",
        "data_read_per_join": "122K"
      },
      "used_columns": [
        "product_id",
        "lang_code",
        "short_description",
        "full_description"
      ],
      "attached_condition": "((`goimagine`.`product_descriptions`.`product_id` in (411583,411596,411601,411602,411622,412155,412166,412184,412200,412954,413476,414223,414250,414786,414800,414813,414826,415560,416136,416137,417424,417445,417469,418178)) and (`goimagine`.`product_descriptions`.`lang_code` = 'en'))"
    }
  }
}