Fastest Way to Find Distance Between Two Lat/Long Points

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I currently have just under a million locations in a mysql database all with longitude and latitude information.

I am trying to find the distance between one point and many other points via a query. It’s not as fast as I want it to be especially with 100+ hits a second.

Is there a faster query or possibly a faster system other than mysql for this? I’m using this query:

SELECT 
  name, 
   ( 3959 * acos( cos( radians(42.290763) ) * cos( radians( locations.lat ) ) 
   * cos( radians(locations.lng) - radians(-71.35368)) + sin(radians(42.290763)) 
   * sin( radians(locations.lat)))) AS distance 
FROM locations 
WHERE active = 1 
HAVING distance < 10 
ORDER BY distance;

Note: The provided distance is in Miles. If you need Kilometers, use 6371 instead of 3959.

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