Moodle allows faculty to modify test taking attributes for individual students.
To extend the quiz time for an individual student, go to your course in Moodle.
Go to your exam, and click on the Settings gear -> "User overrides"
Click "Add user override"
Search for the student's name with the academic accommodation.
Modify the "Time limit" section to give the student more time.
Click "Save" near the bottom of the window.