Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '72d027bc084d7e65b61eacd2e77bd77dfe28d3d8a7d85ee86351ab4eb25f40e0' 
  AND token = 'qWc0+V990dAClpgQfYVwRhTBY8aDWqzJtMtj91J9xnY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00010

JSON explain

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