Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '4af3ed64d95425d4e3698c4ceec5f1b3befb5ea503d7fd8ebb6536c04435f035' 
  AND token = 'hOuIqbbtJlxHkcS78WjTzfHrl6kBSTIu9gnXprioE7o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

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