Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3c19b7746993b3b589dbb65236051197bf10012db56009d74705b768f1059063' 
  AND token = 'z/Oqtg259yphNekOe5ABrc5Oq+sMmSuZ1DH/4UOCu/s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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