Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '595ca8ce11569236a7434f745f593e60389f9aa18078a4860b0a33c5189dc9eb' 
  AND token = '62Uc7cmBAuIFsNWR7uHikVioczlz0kvx2TQtsCxzrRg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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