Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0ae51af09de15b730ef5c54d1c20045ac7e2ed038c91bfb622a184159e2e9026' 
  AND token = 'k7yAiewdvtB75ytZapyY0vJH7k/ffiElEHbpI98yjf8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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