Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a41fe684c730f14c793fcf616a56bc675f7485afd25bb864efbfca6e75eaa99f' 
  AND token = 'VaAKFFax62yg7GNe8fTp9YSCvKUi/44qoTc9drDlppw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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