Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2c27fa538d670aa96da1c88d52fdbc68e083cb16e3c02707a548a224da27a6b3' 
  AND token = 'JZc06aJVyeoKyXKLJU1Ppsmg1SQhqZ1rDeejNXJhdWs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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