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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 (
    2008, 2009, 2010, 2011, 2012, 2013, 2014, 
    2015, 2016, 2017, 2018, 2019, 2020, 
    2021, 2022, 2023, 2024, 2025, 2026, 
    2027, 2028, 2029, 2030, 2031, 2032, 
    2033, 2034, 2035, 2036, 2037, 2038, 
    5668, 5669, 5670, 5671, 5672, 5673, 
    5674, 5675, 5676, 5677, 5678, 5679, 
    5680, 5681, 5682, 5683, 5684
  ) 
  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 0.00039

JSON explain

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