Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '327a2f35012c6eec2199608d94aa195ac4062885c0a450290a02117cf8db4a85' 
  AND token = 'j3yMNaihfBAHzMQ+vLgZwR6rutpbeUtLNiXB1zQXWk8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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