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 (
    5568, 5574, 5571, 5573, 5569, 5567, 5572, 
    5570, 5581
  ) 
  AND cscart_ult_product_descriptions.company_id = 1 
  AND cscart_ult_product_descriptions.lang_code = 'en'

Query time 0.00024

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "table_name": "cscart_ult_product_descriptions",
      "access_type": "range",
      "possible_keys": ["PRIMARY", "product_id", "company_id"],
      "key": "product_id",
      "key_length": "3",
      "used_key_parts": ["product_id"],
      "rows": 9,
      "filtered": 100,
      "index_condition": "cscart_ult_product_descriptions.product_id in (5568,5574,5571,5573,5569,5567,5572,5570,5581)",
      "attached_condition": "cscart_ult_product_descriptions.company_id = 1 and cscart_ult_product_descriptions.lang_code = 'en'"
    }
  }
}

Result

product_id short_description full_description meta_keywords meta_description search_words promo_text
5567 P35-5E3-PS-C8-001 - 942-962 MHz 5-10 In, 350 Out, 110 VAC V 10A Amplifier
5568 P35-10E3-PS-C8-001 - 150-174 MHz 10-20 In, 350 Out, 110 VAC V 10A Amplifier
5569 P35-20E3-PS-C8-001 - 150-174 MHz 20-50 In, 350 Out, 110 VAC V 10A Amplifier
5570 P35-50E3-PS-C8-001 - 150-174 MHz 50-100 In, 350 Out, 110 VAC V 10A Amplifier
5571 P35-5E3-PS2-C8-001 - 150-174 MHz 5-10 In, 350 Out, 220 VAC V 5A Amplifier
5572 P35-10E3-PS2-C8-001 - 150-174 MHz 10-20 In, 350 Out, 220 VAC V 5A Amplifier
5573 P35-20E3-PS2-C8-001 - 150-174 MHz 20-50 In, 350 Out, 220 VAC V 5A Amplifier
5574 P35-50E3-PS2-C8-001 - 150-174 MHz 50-100 In, 350 Out, 220 VAC V 5A Amplifier
5581 P25-1HA3-PS1-C8-001 - 450-470 MHz 1-2 In, 250 Out, 110 VAC V 10A Amplifier