This key and lock combination are a high security lock made by MEI Lock & Security for ADA Lock. It is called a Pagoda Plunger Lock. Know applications are-
Key and lock for motorcycle helmets made by ADA
Key and Lock for YETI COOLER MOUNT made by ADA
Key is double sided and basically cannot be duplicated easily due to the unique key way and key blank used for making it much more secure than standard locks.
Sold lock and key together only. See pictures below