The key cylinder is located underneath a cover on the driver's door.
To remove the cover, use the ignition key to depress the release button on the bottom of the cover, then insert the key as normal to unlock the door.
RepairPal Certified shops can diagnose and repair your 2014 Kia Cadenza. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.
I have the remote and a key inside of it.