Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '718fae0918e8f5a6d31fc021f9cf2e5325ee7569eca9f0faf0b9c442cb6fc017' 
  AND token = 'GBUcSODuogOKE6AWRfFzxabWV+stcAfuwkohvs/+Y8M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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