Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'dab56e3800acf3f98d0f789f4777f5c548cabf2ccec8f38381c63a969c3d0661' 
  AND token = '4xurhAkRZ8B2Ikd+m0ArBtmDMsWoxFnpNB/i8qspaoA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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