UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'XRdpYtDKHa1hpYP+pYLeN2QoNZ2Np67dmczIOZAyVu0=' 
WHERE 
  key_id = 'b5a50f59906da5210fa9d95d0f6a149fa1294b15dbab90908bc9164c8f6830e4' 
  AND (
    token = 'XRdpYtDKHa1hpYP+pYLeN2QoNZ2Np67dmczIOZAyVu0=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )

Query time 0.00061