SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '221835a07135bed5d1fa943c78be829364495eaa08bf3d49075b03f215806fb4' 
  AND token = 'Zm08yl+e1WMNECJonBZ8r/JRLWBPRjzzY4vsX8+tx8U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00068

JSON explain

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