Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'da5daaef7b2ad2ea5cc5ec77b73c06377f2bdfcab106503cf27e03fa1632de33' 
  AND token = '7FWKz3zT1TiswUF17C4uKm8TtWAS9ItwXbmj6455yr0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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