Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '4c5fa387dcb6fd8633e3768968d97015630cc1ecb33c638f07f630a35e3e4180' 
  AND token = 'zE/N3ZJ445qtE6iEGiWRwaVgUL54dYpfTMvexQIiVK0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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