UPDATE 
  cscart_aprillock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'C4vSVLKUDRNn/a9bQ0qtkPkhBoXLgOomOg18GsDYG9M=' 
WHERE 
  key_id = 'ff686ea4020671ecc8678831bf28d3d1120291675589fd4932b464ee12938268' 
  AND (
    token = 'C4vSVLKUDRNn/a9bQ0qtkPkhBoXLgOomOg18GsDYG9M=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )

Query time 0.00053