Our full-service locksmith shop and professional locksmiths are dedicated to completing your project (large or small) with quality results. Whether you need a new or replacement car key, a lock changed, a safe moved, repaired or installed, or you're thinking of purchasing a safe, there's no better choice than Mayfair Key and Lock. Serving the Oklahoma City area and beyond since 1969. Lyle Dieckmann started Mayfair Key and Lock in 1969, to serve customers in Oklahoma City with fair prices and unmatched customer care in locksmith services.