Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a5c10104b19ef8ae38f8e5c0d114321d92b69e27d5b702f751cf6482d801251d' 
  AND token = '8rXCXYzgJc3KCNZxhxn1A9lLjd8Fh5WScpPlkYr7dFM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00013

JSON explain

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