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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 (
    416, 417, 418, 3616, 3617, 3618, 4080, 
    4081, 4082, 4083, 4084, 4085, 4086, 
    4156, 4157, 4158, 4159, 4160, 4161, 
    4162, 4209, 4210, 4211, 4212, 4213, 
    4214, 4215, 3102, 3110, 6670, 6685, 
    6698, 3095, 3101, 3108, 6683, 6697, 
    3099, 19, 20, 21, 3929, 3930, 3931, 6724, 
    3100, 3106, 3114
  ) 
  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 0.00034

JSON explain

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