Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '73389aeff9a89f5ac1f5927c9ab915e18759884c12576486d349860ac03351dc' 
  AND token = '/XgAm0y2IbCgR4tlWh5cxsFTBKMHF2tIudAScg2ttrA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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