SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'cb3450888eb4d0f0763bfc28650954d96cee85a8c7211118919c2da713ba55c8' 
  AND token = '3dns1/mLkiWqq9JlINhjLVPUMtz3RkZdCiwBR5i2eGc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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