Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f8eff92f5c64c63266b9230c11fbc63447809231dfea255e4effcb7b05d38b23' 
  AND token = 'FNTfWRH1QaRw6+OqqbNCwOXidxradJ9AYyQV8HiiW3o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00059

JSON explain

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