Sandbox

SELECT 
  cscart_ult_product_descriptions.product_id, 
  cscart_ult_product_descriptions.short_description, 
  IF(
    cscart_ult_product_descriptions.short_description = "", 
    cscart_ult_product_descriptions.full_description, 
    ""
  ) AS full_description, 
  cscart_ult_product_descriptions.meta_keywords, 
  cscart_ult_product_descriptions.meta_description, 
  cscart_ult_product_descriptions.search_words, 
  cscart_ult_product_descriptions.promo_text 
FROM 
  cscart_ult_product_descriptions 
WHERE 
  cscart_ult_product_descriptions.product_id IN (
    2666, 3845, 2667, 2668, 2669, 2670, 3846, 
    3847, 3848, 3849, 3850, 6258
  ) 
  AND cscart_ult_product_descriptions.company_id = 1 
  AND cscart_ult_product_descriptions.lang_code = 'en'

Query time 0.00046

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "9.47"
    },
    "table": {
      "table_name": "cscart_ult_product_descriptions",
      "access_type": "range",
      "possible_keys": [
        "PRIMARY",
        "product_id",
        "company_id"
      ],
      "key": "PRIMARY",
      "used_key_parts": [
        "product_id",
        "lang_code",
        "company_id"
      ],
      "key_length": "13",
      "rows_examined_per_scan": 12,
      "rows_produced_per_join": 12,
      "filtered": "100.00",
      "index_condition": "((`gaseus`.`cscart_ult_product_descriptions`.`company_id` = 1) and (`gaseus`.`cscart_ult_product_descriptions`.`product_id` in (2666,3845,2667,2668,2669,2670,3846,3847,3848,3849,3850,6258)) and (`gaseus`.`cscart_ult_product_descriptions`.`lang_code` = 'en'))",
      "cost_info": {
        "read_cost": "8.27",
        "eval_cost": "1.20",
        "prefix_cost": "9.47",
        "data_read_per_join": "45K"
      },
      "used_columns": [
        "product_id",
        "lang_code",
        "company_id",
        "short_description",
        "full_description",
        "meta_keywords",
        "meta_description",
        "search_words",
        "promo_text"
      ]
    }
  }
}

Result

product_id	short_description	full_description	meta_keywords	meta_description	search_words	promo_text
2666		Bourdon tube pressure gauge with reed contact, housing diameter 63 mm and radial connection 1/4 NPT-M at the bottom at 6 o'clock. Housing diameter: 63 mm. Scale: see item selection. Material: stainless steel.
2667		Pressure gauge PI 50 mm Bourdon tube 1/4 NPT-M at 6 o'clock Kl 2.5 BC Housing diameter: 50 mm Nickel-plated brass
2668		Pressure gauge PI 50 mm Bourdon tube 1/4 NPT-M at 6 o'clock Kl 2.5 BC Housing diameter: 50 mm Nickel-plated brass
2669		Pressure gauge PI 50 mm Bourdon tube 1/4 NPT-M at 6 o'clock Kl 2.5 BC Housing diameter: 50 mm Nickel-plated brass
2670		Pressure gauge PI 50 mm Bourdon tube 1/4 NPT-M at 6 o'clock Kl 2.5 BC Housing diameter: 50 mm Nickel-plated brass
3845		Bourdon tube pressure gauge with reed contact, housing diameter 63 mm and radial connection 1/4 NPT-M at the bottom at 6 o'clock. Housing diameter: 63 mm. Scale: see item selection. Material: stainless steel.
3846		Pressure gauge PI 50 mm Bourdon tube 1/4 NPT-M at 6 o'clock Kl 2.5 BC Housing diameter: 50 mm Nickel-plated brass
3847		Pressure gauge PI 50 mm Bourdon tube 1/4 NPT-M at 6 o'clock Kl 2.5 BC Housing diameter: 50 mm Nickel-plated brass
3848		Pressure gauge PI 50 mm Bourdon tube 1/4 NPT-M at 6 o'clock Kl 2.5 BC Housing diameter: 50 mm Nickel-plated brass
3849		Pressure gauge PI 50 mm Bourdon tube 1/4 NPT-M at 6 o'clock Kl 2.5 BC Housing diameter: 50 mm Nickel-plated brass
3850		Pressure gauge PI 50 mm Bourdon tube 1/4 NPT-M at 6 o'clock Kl 2.5 BC Housing diameter: 50 mm Nickel-plated brass
6258		Pressure gauge PI 50 mm Bourdon tube 1/4 NPT-M at 6 o'clock Kl 2.5 BC Housing diameter: 50 mm Nickel-plated brass