Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd894a1fd23ac99972754898fe6e4aa12860dda0d66ce843a608906944d93f019' 
  AND token = 'XNVnyNOxWIQfOBGyXUFEzn6aNbb2ZIiEJlzTAUly44k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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