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SELECT 
  cscart_ult_product_prices.product_id, 
  MIN(
    IF(
      cscart_ult_product_prices.percentage_discount = 0, 
      cscart_ult_product_prices.price, 
      cscart_ult_product_prices.price - (
        cscart_ult_product_prices.price * cscart_ult_product_prices.percentage_discount
      )/ 100
    )
  ) AS price 
FROM 
  cscart_ult_product_prices 
WHERE 
  cscart_ult_product_prices.product_id IN (
    5535, 5536, 5537, 5538, 5539, 5540, 5541, 
    5542, 5543, 5544, 5545, 5546, 5547, 
    5548, 5549, 5550, 5551, 5552, 5553, 
    5554, 5555, 5556, 5557, 5558, 5559, 
    1457, 5166, 1447, 5156, 5169, 3162, 
    1450, 5159, 1440, 5149, 1451, 5160, 
    1441, 5150, 1453, 5162, 1443, 5152, 
    1770, 1771, 1772, 1773, 1774
  ) 
  AND cscart_ult_product_prices.lower_limit = 1 
  AND cscart_ult_product_prices.company_id = 1 
  AND cscart_ult_product_prices.usergroup_id IN (0, 0, 1) 
GROUP BY 
  cscart_ult_product_prices.product_id

Query time 0.00026

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}