Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9804433de90c5829e45ac9f24da02327c16814bf33d8dcd59f65dfa56483e551' 
  AND token = '/zedzD7rfce9XGBBrtncdnVso0G0H3q8GBjWHUMtRWQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00161

JSON explain

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