Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'caead5b131eee7ab5cafbe6b53ea76ce64818cbbd6d191bdc137b5f78318ecfb' 
  AND token = 'BCkQrmRBAaPErtjoIINYfCA2rbeMLs1EJh6Gh5NwU8M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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