Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a7ae935569049a289af9d31f8f3745c064b212307a10677c2db6f24b592bb6e9' 
  AND token = 'Ft4c3aAm8vfkNDwWMqWGcuiDyhY11lqwIBdxfTw1eLY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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