Am I going to have issues going through airport security with my KeyBar®?

You should not have issues continuing through security with a KeyBar® as long as the items included in/with your KeyBar® are TSA compliant. However, as airport security often checks items, the attendants may ask to examine your KeyBar®.

Click on the link, https://www.tsa.gov/travel/security-screening/prohibited-items,  to find items that are not TSA compliant.