UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'PU8GaFF/BGO4FWqsq0LqnK5O7RqOlfzXTlN31vKQSCQ=' 
WHERE 
  key_id = '506d1bec332da5dde121f759bc2399bd74045a1c195c1b080d47f1de497d6321' 
  AND (
    token = 'PU8GaFF/BGO4FWqsq0LqnK5O7RqOlfzXTlN31vKQSCQ=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )