Syntax:
CURTIME([fsp])

Returns the current time as a value in 'HH:MM:SS' or HHMMSS format,
depending on whether the function is used in a string or numeric
context. The value is expressed in the current time zone.

As of MySQL 5.6.4, if the fsp argument is given to specify a fractional
seconds precision from 0 to 6, the return value includes a fractional
seconds part of that many digits. Before 5.6.4, any argument is
ignored.

URL: http://dev.mysql.com/doc/refman/5.6/en/date-and-time-functions.html

