SELECT 
  cscart_products.* 
FROM 
  cscart_products 
WHERE 
  cscart_products.product_id IN (
    1788, 1697, 1657, 1687, 1921, 1238, 1197, 
    1307, 1306, 1940, 1941, 1660, 1751, 
    1677, 1305, 1588, 1662, 1635, 1747, 
    1587, 1771, 1709, 1957, 1707, 1768, 
    1710, 1954, 1953, 1730, 1686, 1593, 
    1594, 1616, 1773, 1701, 1584, 1585, 
    1868, 1579, 1956, 1495, 1739, 1740, 
    1912, 1913, 1650, 56, 1836
  )

Query time 0.00110

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "table_name": "cscart_products",
      "access_type": "range",
      "possible_keys": ["PRIMARY"],
      "key": "PRIMARY",
      "key_length": "3",
      "used_key_parts": ["product_id"],
      "rows": 48,
      "filtered": 100,
      "index_condition": "cscart_products.product_id in (1788,1697,1657,1687,1921,1238,1197,1307,1306,1940,1941,1660,1751,1677,1305,1588,1662,1635,1747,1587,1771,1709,1957,1707,1768,1710,1954,1953,1730,1686,1593,1594,1616,1773,1701,1584,1585,1868,1579,1956,1495,1739,1740,1912,1913,1650,56,1836)"
    }
  }
}