There isn't a readily accessible fuel pump shut-off switch on a 1995 Ford Explorer like you might find in some other vehicles. The fuel pump is controlled electrically and its operation is managed by the vehicle's computer system. Disabling the fuel pump usually requires disconnecting the electrical supply (potentially dangerous and should only be attempted by someone with automotive electrical experience), or pulling a specific fuse or relay. Consult your owner's manual for fuse locations and descriptions. Incorrectly disconnecting or modifying the electrical system can damage components.
If you're trying to disable the fuel pump for safety reasons (e.g., after a crash), disconnecting the battery negative cable is the safest approach. This will cut power to the entire vehicle, including the fuel pump.