UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'xzQtbBp4FdhC0edgdGwqwCO+zqXoeHA+eBdovgivG1E=' 
WHERE 
  key_id = '51c50afc2dd229fe99effa39b37377ef8eb04c4578898897ecefc574227ef2cc' 
  AND (
    token = 'xzQtbBp4FdhC0edgdGwqwCO+zqXoeHA+eBdovgivG1E=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )