The Key Secured Credit Card ® is a personal credit card from Key Secured Credit Card ®. The annual fee is $0.00. The ongoing APR is 17.49% to 27.49% variable rate, based on creditworthiness. after a 0% intro APR for 6 billing cycles on purchases and balance transfers made in the first 60 days. introductory rate for 6 months. Signup bonus: $200 bonus cash back when you spend $1,000 in qualifying purchases in the first 60 days.. Rewards: up to 2% unlimited cash back on purchases.