Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e437413fb7cecbc2155c4e8ba06110d9bd64562e48309ddf44f44e8dd38100de' 
  AND token = 'IrCsol47n+XTW6FGL+09/4aF0so9BvpCWxFutA5Inng=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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