Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '0682a1d35b7f4ae21dc9547a1c093036914ab24ecb5dd224b7d61c4c7acc42f5' 
  AND token = 'WLUo1hBCv1xwCFERSi9qJudWXtf5UGZsTss50hXa+S0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

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