UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'P7BFqJtfSNcGhKW+31bEdUq2aCBcDmtnu7q4s7iAPa0=' 
WHERE 
  key_id = '51ecc3829da65022eb63a8a08fdb2d214a53f0404c1d0b5d43626523683c342e' 
  AND (
    token = 'P7BFqJtfSNcGhKW+31bEdUq2aCBcDmtnu7q4s7iAPa0=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )