title: How to select all records that are 10 minutes within current timestamp in MySQL?
body: <p>I have timestamps in a table column called "last_seen" like so:</p>
  
  <pre><code>2012-01-25 18:46:42
  2012-01-23 08:19:04
  2012-01-23 08:19:04
  
  etc...
  </code></pre>
  
  <p>How can I get all records where the timestamp is within 10 minutes of the current timestamp (in the most efficient way)?</p>