Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '80a9399955429dadbf29f6ed13854ac20340f45c1ab26f04cc7beeacd1df1a00' 
  AND token = 'VRwXXfwxynss+aacuzRemYRi6QFJH98H8T5wWRO0KqE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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