Priority of AND and OR operator in Mysql select query

I have a written a mysql select query to fetch schedule details based on origin states,origin city,destination state and destination city. In my query i have used AND and OR operator.

Here is my query,

SELECT * FROM TruckLoadSchedule ts 
WHERE ts.originState IN (states) AND ts.originCity IN (cities) 
   OR ts.destState IN (states) AND ts.destCity IN (cities);

But I need to know the priority of AND and OR operator in the above query, i mean to say will it do something like this (X AND Y) OR (M AND Q) internally?