Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ed85678175255f4cdfd898c30718cb77fba1e1b7979df3cd98bf75529db6d3e2' 
  AND token = 'GdZXVvb17HcNkPNWNH82dr/p8NdTEWPb1zJUUhu0EuI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00083

JSON explain

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