Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ded2513c14d380aff04161b33d44772caf044bc8dfcdb275ba7424cb395e7d51' 
  AND token = 'Hy8bp45baW5qsnFGjC7A0QR0K7YydoOpwDEK7YTg8+M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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