SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '3441eeff896b5bb1a8c9fcd6d19a5fa0703daac241199836781d2c389707a8f8' 
  AND token = 'VIPIf6FQdVmyH3+U2qgD64Td8QcK+fwCZMXxJQH8zf0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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