Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '913180d7d16c8e6e2ae6fee53682d1d1dee03c45fd03f044c8a048171009146b' 
  AND token = 'oFeWdOHD/7V6sIvUUe+DuR7tfqnZyyP3xjMz6z2KOEs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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