Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5f3a2173a781e2e4a0f9c558fb78742f7bfee587c7781f4f52eff5e9766f0992' 
  AND token = 'TLSlehs9qAFesHylgnD/6SxUHacPTmHAj5EQFVI/8K8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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