UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 300, 
  token = 'zg27SlCf1eMcf7zl7yt+rL+XVvpsvFpaKdmaORLDrY8=' 
WHERE 
  key_id = 'eb8faa8745cdd0971cfab860e2bb3c4a2c7540cab401c267f8b80eff2df8447b' 
  AND (
    token = 'zg27SlCf1eMcf7zl7yt+rL+XVvpsvFpaKdmaORLDrY8=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )