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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 (
    1925, 1926, 1927, 1928, 1929, 1930, 1931, 
    5560, 5561, 5562, 5563, 5564, 5565, 
    5566, 5567, 5568, 5569, 5570, 5571, 
    5572, 5573, 5574, 5575, 5576, 5577, 
    5578, 5579, 5580, 5581, 5582, 5583, 
    5584, 5585, 5586, 5587, 5588, 5589, 
    5590, 5591, 5592, 5593, 5594, 5595, 
    5596, 5597, 5598, 5599, 5600
  ) 
  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"
  }
}