UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = '9yMDCmZhdXSu5aFk3u6y81pInAqOEcQReJdLYZe1bUk=' 
WHERE 
  key_id = '50e53457941d06ddecfa3626c56ffc38b0e79a54ebf051e78ee715d2b73b3588' 
  AND (
    token = '9yMDCmZhdXSu5aFk3u6y81pInAqOEcQReJdLYZe1bUk=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )