Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3ede0f268b3e051f3a07dd71edc5c8139333163d98f3bafb66225512948eecf0' 
  AND token = 'hHa+HDTyL9OwcKhEkHWGsYRR1Gthaikqy7V+uyIw5fM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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