Syntax:
UTC_TIME, UTC_TIME([fsp])

Returns the current UTC time as a value in 'hh:mm:ss' or hhmmss format,
depending on whether the function is used in string or numeric context.

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.

URL: https://dev.mysql.com/doc/refman/8.0/en/date-and-time-functions.html

