Definition of golden ticket in English:

golden ticket

noun

  • 1A gold-coloured ticket granting the holder a valuable prize.

    ‘the first ten got a golden ticket to get their book signed by the author’
    1. 1.1 A qualification or set of circumstances that gives someone a significant opportunity.
      ‘an MBA was a golden ticket into a world of six-figure salaries’
      ‘this promise was the golden ticket that won him the presidency’

Origin

Early 19th century: popularized by Roald Dahl's novel Charlie and the Chocolate Factory (1964).