Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd5aaa799faa8ae4bb4a53d44ed24df8da24f39a40bd75736555a155dd7fea304' 
  AND token = 'y0ErithbnZ/QUqoCjF5Me2iJhpj+r/rbu/moX6jioWo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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