UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'B6j4k5O0SWg1VP0SAwQQePq4ERSy8H4YlvYNitwafPc=' 
WHERE 
  key_id = '50f173f227cf95855a10b0e9df2e0554a54ff83200c5d29dd8c896040999a76a' 
  AND (
    token = 'B6j4k5O0SWg1VP0SAwQQePq4ERSy8H4YlvYNitwafPc=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )