Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'db0128a5f4b1e7a3d85c0bf0bd1540d6cf1c4814a0c2eb976f4139d525e178f0' 
  AND token = 'ogA6prvgYYdr7zMv4+a59wN6jj8jnEL9h9C6oE26qTk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

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