The Kia Optima is a mid-size car produced by Kia Motors beginning in 2000 and marketed globally with various names. Firsts-generation cars (2001-2005) were generally sold as the Optima, though the name Kia Magentis was used in Europe and Canada when sales in those regions began in 2002.
you should be able to use your old key. go to your local locksmith he should be able to fix your old lock if it wasnt taken to with a large screwdriver & hammer