SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c13be68f6b52ab452230b348d9409c3419b7f83ebda952ab4375c269e32c3ef4' 
  AND token = '/tYwSD5m80NIxgUC/wzeKN+72W4ij+rZX3LUcl1lqNw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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