Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3880a46d48660f07a7e2125135dcf79460c3100220b27a00b63a6efcaa215e32' 
  AND token = 'ckAN6irKTvLpq76GfCjnq1Tx7eI21/oVGGD9ok1eqLQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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