I don't have that kegorator . . .however, I would suggest contacting either the equipment manufacturer or a licensed dealer.
Generally, the locks on such equipment have a little number printed on the face of the lock, near the keyhole. If you give that number to the manufacturer or dealer, they can oftentimes get a new key for it.
That's not a guarantee, but you can always look. Even if you don't see a number, you can always call, as they may have other ways of getting you keys.
Nothing Beats a Fool's Luck . . . and I am the Master Fool.