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SELECT 
  f.feature_id, 
  f.purpose, 
  p.product_id, 
  p.parent_product_id, 
  g.id, 
  g.code 
FROM 
  cscart_product_variation_group_features AS f 
  INNER JOIN cscart_product_variation_groups AS g ON f.group_id = g.id 
  INNER JOIN cscart_product_variation_group_products AS p ON f.group_id = p.group_id 
WHERE 
  p.product_id IN (
    1306, 1307, 1310, 1308, 1309, 1311, 1314, 
    1313, 1318, 1319, 1315, 1316, 1317, 
    56, 1299, 1298, 1297, 1260, 1296, 1295, 
    990, 1294, 1293, 1129, 1278, 1269, 1261, 
    1292, 1291, 1290, 1289, 1288, 1287, 
    1286, 1285, 1284, 1283, 1282, 1275, 
    1281, 1280, 1279, 1274, 1145, 1134, 
    1273, 1272, 93
  )

Query time 0.00059

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}