Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '80bbc7357e2b905883dff62ae1f1ae7988f85a96b79c04628145f0665c0a7ced' 
  AND token = 'Yf4fH/2QNo8YYfXY5N9NJk6Xe2+tGWWVGjcEKhyX9Lk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00122

JSON explain

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