SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'd09474a9ac00ca5b177fec68515fe91f0d8cd7050d6f7db0b483943234f8531c' 
  AND token = 'VYqhlhNbpx94IFSSYC8RuYZaH/+f4KWAIBtO3+84mks=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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