SELECT 
  cscart_products.* 
FROM 
  cscart_products 
WHERE 
  cscart_products.product_id IN (
    12546, 12633, 12573, 12548, 12580, 12576, 
    12565, 12567, 12549, 12581, 12557, 
    12558, 12570, 12578, 12568, 12547, 
    12569, 12584, 12592, 12575, 12574, 
    12550, 12544, 12564, 12577, 12579, 
    12555, 12560, 12556, 12561, 12572, 
    12583, 12591, 12582, 12590, 12571, 
    12632, 12559, 12631, 15938, 13091, 
    12551, 12638, 12634, 12636, 12635, 
    12599, 12627, 12600, 12639, 15800, 
    12595, 12587, 12593, 12620, 12623, 
    12619, 12585, 12616, 12601, 12628, 
    12602, 12640, 12647, 12588, 12605, 
    12606, 12637, 12612, 12613, 12641, 
    12554, 12552, 12642, 12648, 12611, 
    12596, 12607, 12608, 12610, 12643, 
    12649, 12609, 12644, 12650, 12652, 
    12653, 12654, 12646, 12655, 12656, 
    12645, 12651, 12597, 12615, 12603, 
    12629, 12604
  )

Query time 0.00243

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": 98,
      "filtered": 100,
      "index_condition": "cscart_products.product_id in (12546,12633,12573,12548,12580,12576,12565,12567,12549,12581,12557,12558,12570,12578,12568,12547,12569,12584,12592,12575,12574,12550,12544,12564,12577,12579,12555,12560,12556,12561,12572,12583,12591,12582,12590,12571,12632,12559,12631,15938,13091,12551,12638,12634,12636,12635,12599,12627,12600,12639,15800,12595,12587,12593,12620,12623,12619,12585,12616,12601,12628,12602,12640,12647,12588,12605,12606,12637,12612,12613,12641,12554,12552,12642,12648,12611,12596,12607,12608,12610,12643,12649,12609,12644,12650,12652,12653,12654,12646,12655,12656,12645,12651,12597,12615,12603,12629,12604)"
    }
  }
}