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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 (
    3120, 3125, 3153, 3154, 6672, 6688, 6689, 
    6694, 6702, 6706, 6708, 6726, 6725, 
    3103, 3097, 3113, 6687, 6699, 36, 37, 
    38, 39, 40, 41, 42, 83, 84, 85, 86, 87, 
    88, 89, 147, 148, 149, 150, 151, 152, 
    153, 168, 169, 170, 171, 172, 173, 174, 
    250, 251
  ) 
  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 0.00033

JSON explain

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