Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1b64e6fbb577d74ee9f1a053eb061bf48a986e5985d8e381edbfa353b3ed761a' 
  AND token = 'Md7B1icxUcZSWU83yxTQDo9Tyx2k+XG5ITlLlNv0NKw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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