I have programmed a simple C# program which creates random string and calculates the MD5, SHA-1, SHA-256, SHA-384 and the SHA-512 Hash. It stores it in my local db. But when i try to do this SQL:

```
SELECT Original FROM md5list WHERE md5 = 'blabla' LIMIT 0, 50

```

But after a while, the mysql Server disconnects and says that the query took too much time. How can i expand the time or make it faster? And is it possible to get the result in one hour?