Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'e6e6c1d6df71c4ff41184055a0287e656d035c3466dd7a85f6722ffb722d7563' 
  AND token = 'QYbfvXDXl7fo4YowvpBpE5+QiIue4/1PwxNVoAM+F4E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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