Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5d179b0c3c62f83987f1023f647eb51abb454b2abd4b8d1ea48a1c81e6285aea' 
  AND token = 'ga3ypL1IQOs5wdinvAxGfWuuDKx7mN8t2+SsISuYjRE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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