Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '074a8bd8905b4662e6365e43f57d86d0cdd880e8af5abb53889987d4b2d49209' 
  AND token = 'lU5/ZWkD3EL7KfbYJ0z9EX3PlydmRiMsFYZBd39b2tg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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