UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'SAIXd7OHr9GlqwCudRjIyjYTeIhEtrVQvPoLiGFCb8s=' 
WHERE 
  key_id = '1f74b990ce03508b6f8b31b389b15a43c1c02df75e10f15aa32dc11f4f3c9308' 
  AND (
    token = 'SAIXd7OHr9GlqwCudRjIyjYTeIhEtrVQvPoLiGFCb8s=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )

Query time 0.00035