Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0015a729f9ea81f05e18b8a75904eb478dcf2734e7febeb54b567a6966116035' 
  AND token = 'itIQ9Z1xV9LCHoZEDjOcJNba+g8hAKGLjbpvQoitNOI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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