UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'GhEXdLLjWiJCoZRyayevmV9cTj9pKiQC5Lj04Mm7ydU=' 
WHERE 
  key_id = '50fa8ee9c964e04a91f3bfc0b8326cc7a8a8125715d6e68069ce2ae07194d0f2' 
  AND (
    token = 'GhEXdLLjWiJCoZRyayevmV9cTj9pKiQC5Lj04Mm7ydU=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )

Query time 0.00030