Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b59df7df812561852ce1c33a190ff0b53f7b212974aba1a178ee755919e7aaf3' 
  AND token = 'bII08m1ElMvXImZdonxgxnqrQj0XLcuh6+yA1t2I3ZA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

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