there is a priority lane but you will hardly notice any difference...... because it is not a very strict lane... when it is not crowded (90% of the day) it is closed, when it is crowded you have a priority entrance but end in a waiting line with all other Pax that do not realize the difference...
I took about 70 flights from STR and tried to use priority twice and always ended up spending the same amount of time than through the regular lane.