Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c1126d81ed72e2d9af757754109eb44bc3b37fd7331ca44f2d61d33b8926415f' 
  AND token = 'pOhNKLpeCZnW2UuvsA0zMs4IgpO4tLoOxevOE0XLScU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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