Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '11b794c261c60ff59e0be16a9c45cc6bace950d801f93a48c04e235c907a8bc0' 
  AND token = 'gXPu/JXCZM7LOyCEzI+Te/3dzRc2bgP2gaU+Wwr49cI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00073

JSON explain

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