Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '96d9998db34a821a86d6b43a70149a75328f838c14bf978c65e7aca063bf7088' 
  AND token = 'qe4F57fpKjCqQcJp+OHUKsb7w1L+/krkQKjbSvddIlI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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