Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6579531f8af4f354e6386e496b35f59b802e5a74f49ecb9798b0430d6176a4eb' 
  AND token = 'gCbXIinZrLw652exeA2kOox5KmYH+ct+gSPppX0UggI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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