Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7e2fcc63818a0e903059fa7b5e29bd950a3ae06ac28be979a08f4c57b1e356ed' 
  AND token = 'kqArH69NaUOzlWDvP+WiMNEBPKrsqQUM/Mh+JfF0iDQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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