Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '02d60b1722d9bf1ebe2d68648dbc6b03fc68a804f44d5d06f771bb362e79b16b' 
  AND token = 'esC2UmywKl3wpLqf6cFK8jgJBsQB1VZ3g7E6KDIbXzA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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