UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 300, 
  token = 'Dh0qkzkDwgOPCAK5Sm+yv9scgkZIdiWlqQugI4emUts=' 
WHERE 
  key_id = '6fb5b7f98761647639408d34b5299e784174d5cf635317fa5965bb3318b668b4' 
  AND (
    token = 'Dh0qkzkDwgOPCAK5Sm+yv9scgkZIdiWlqQugI4emUts=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )