Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e2066f1febbb29ac128c166266d107b510ce3935fac33d3e5c1140a4fc62b773' 
  AND token = 'qEpBoizhsYX7qBDXrkbTWhdHfP/eIhlO2VqEwrj6jZU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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