Last Man on Earth

From season 3 episode 1.  The group is trying to flee their malibu mansion due to an unexpected arrival of armed people.  Their cars are blocked in by the A team van that Todd was driving.  They frantically search for the keys while Todd describes the Mr. T keychain in great detail.  They find them but not before the outsiders greet them.  The keychain is a Mr. T figure and a talking device with appropriate catch phrases.

From season 4 episode 18.  Tandy Phil Miller (Will Forte) gives the key to an RV, to his Brother (Jason Sudeikis) so that he can leave and find more people.  The keychain features a Mexican flag behind the Virgin Mary.