You can easily restore or import MySQL data with mysql command itself. First you need to login to your system using ssh or putty(from Windows based system). For example:

Login to SSH (make sure you have access to  SSH, contact your hosting provider)

Now type following command to import sql data file:
$ mysql -u username -p -h localhost data-base-name < data.sql

If you have dedicated database server, replace localhost name with actual server name or IP address:
$ mysql -u username -p -h 192.168.1.10 databasename < data.sql
OR use hostname such as mysql.hosting.com
$ mysql -u username -p -h mysql.hosting.com database-name < data.sql

If you do not know the database name or database name is included in sql dump you can try out something as follows:
$ mysql -u username -p -h 192.168.1.10 < data.sql