Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a5fc158accdd8c71948c1ca6eb71d8d2f89930eb28a4b52d4b2acb8b113b487e' 
  AND token = 'EehygSFFvUsvdsxoeoZ5izutsCSacWQEPiinmkT0k58=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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