Update key_request.py

Changed the time you have access for to 3 minutes

key_request.py

@@ -18,7 +18,7 @@ def show():
     # same as the microscope prior to the running of the program running the
     # function update_variable_test() will work
     microscope = "microscope2"
-    access_time = 60
+    access_time = 180
     database_name = "openflexure-microscope"
     collection_name = "Cluster0"
     microscopes = [