Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2cb33f81f4a726d72639bae4bcf40dcc8a937535217617d654014ea4626ce18e' 
  AND token = 'aVbYNMWgoz54d61+0cJMSv8eUjMZBSzde8Xb7/JPs+0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00010

JSON explain

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