Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '811870fcf39a5adb6d74351bd1fe2653374ddd7d9d773c9cd9664ad819886b00' 
  AND token = '8pbyG9Nk+XAH8DDahqOMInZYYC8/IoliO7KnciENpPw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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