You can easily get this task accomplished with CSS.
The formula is:
element[attribute="attribute-value"]
So if you have,
<a href="https://stackoverflow.com/questions/26304224/mysite.com"></a>
You can find it using:
By.cssSelector("a[href="https://stackoverflow.com/questions/26304224/mysite.com"]");
this works using any attribute possible.
This page here gives good information on how to formulate effective css selectors, and matching their attributes: http://ddavison.io/css/2014/02/18/effective-css-selectors.html