Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'ccb271b9349ff8712812a8e3cdb27698d720b36b86dfd3b4166872e99d3b3ee2' 
  AND token = 'kZeobbQRQtVoXtj4Nv6kOvl88pItI9TUM7zEIx/J6as=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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