UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'mer9BRRInrK+WXPqwZsJwuSMYnGe6BAq1kGG/m39jXM=' 
WHERE 
  key_id = '4b8b3f977525723f2c6f99fd1acd49335a4bfebf4f9ebf4e1baecaa2f217813b' 
  AND (
    token = 'mer9BRRInrK+WXPqwZsJwuSMYnGe6BAq1kGG/m39jXM=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )