Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '26a49e7c250d07d4f73e6cc8604e0d175924148deadabc36ad8052792c0c2ed0' 
  AND token = 'PY9by2ca7xApe2e1/uT6OgkXosOlTgoUr9w25+G4nns=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00050

JSON explain

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