Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7299bf8b7421a51dcef572007e3107e30b56edd130f31df464db3af5ea17dde3' 
  AND token = 'DhZwWCGPHlhyAdSJMk3cLPMXRa/mkBVq1S/Bk41I7ak=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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