Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '54849cae8b2dc7167c65068025542e145e48b77fe2f8bf0ecfcee4ad2a6fe029' 
  AND token = 'RMumFVv1TyQGfhSIX2aqdDO1+DNRye2e3O3bWkWsJzM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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