Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '01cfd46c6804bbbb8cbfeb26c8cbef74f57a8d937752c2cc4cab61c12bb9adf1' 
  AND token = 'XLeMbpUMKCeJPRURauKr3VRmX/640H7c9/l11E3s4Ew=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}