UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'nI8RuhHwRTzVer3fyvMIk2UqXf15za5dJXhYFRmlRno=' 
WHERE 
  key_id = '68b039d047c9a4e02b48e9809b68048550755b81b03b001b4c37b344f5d6ae69' 
  AND (
    token = 'nI8RuhHwRTzVer3fyvMIk2UqXf15za5dJXhYFRmlRno=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )