UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'RK5NajWsPqfy97RnUo5h1vZRQVBCQ3Rb0H04UrJxqJs=' 
WHERE 
  key_id = '68e6e30182d16a0f2143927ee46322af92024753e83387d6333a6d947ec02ac6' 
  AND (
    token = 'RK5NajWsPqfy97RnUo5h1vZRQVBCQ3Rb0H04UrJxqJs=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )