No, the 1999 Ford Explorer Limited does not have a readily accessible, manually operated shut-off switch for the fuel pump. The fuel pump is controlled electrically by the onboard computer system and various safety interlocks. There's no easily reached switch to cut power to it like you might find on some older vehicles.
While you can potentially disconnect the fuel pump's electrical connector (a more involved process requiring some mechanical skill), this isn't a practical or safe "shut-off switch." Disconnecting it in an emergency situation would be difficult and dangerous.
