Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'dee3fb5e28558bea99a03e6fc86df6194b69eba8afce17a7e1028c8b885f480f' 
  AND token = 'kXYGLU/yxZPE96GcowM0cQttzjGxKHJZyg2jHGbdb30=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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