Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f173cdba93a06c45093949e374d6e3f509611300272d044c22a31e305579fd97' 
  AND token = 'tb9lfEanveCdfEeuevTlsClz5I2SeuZU8eLklX8zdBk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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