Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'feb50ab98e5932a3739a6e67bde81a9e354af470808caa3414297ea905b9424f' 
  AND token = 'zN2fdlbSWJdLKZ06VF0DKk4+6PVKqVDJj0pDiXPSZC8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}