Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cf1eadf0ec5510fbb8b18b6894d444cbd3f3fccad63103d53202e75230f62637' 
  AND token = 'yau0HYcvvtXoY2YT6Lu38jlHCWR9n+cA6OYzePHRJA0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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