Could be the linkage to the lock is broken as the joints have plastic clips that can break. Might take the car to an auto locksmith (call first), they may have fishing equipment that can go down between the window and door frame then grab the lever to open the lock. This problem has happened before to TN members.
Might try removing the armrest to see if you can access the door lock. The actual door lock is below the key slot (look at the opposite door).
For a diagram download the body section of the Camry service manual from the link below, the 2 cars are almost the same.
http://www.camrymanuals.com/