Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '97053dfbf0da48cbff810bde41a8f659d952faea23de4cd8ac7964a002f750c2' 
  AND token = '9AE74hRHntZLcF1bEoX2RpZLmMfs0Kc+DxW8mfSBffc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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