Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = 'fbff0eaa07c3a90d226b546fbfbea64ca1d864c9a300ebbd13ccedb1635519c8' 
  AND token = 'hpAJloFQDnPAIkol+tNAjJeMML6sUHHuGz0ASqvP3Ps=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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