Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e8c0937e1023577d9562656fcba03f0f564f187bcec476f278e4e42c263ef689' 
  AND token = 'U3vosRkDS3knbyYLeXkOhmuWLwEnf+J4MvoKgBxIcTw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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