Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd4f72dc6da5ee2b3bc3892c7ee929c78be134b22f83dba0a2e823a568fcf122a' 
  AND token = 'QqFlGV7macejJVO8MCs3rDby2maaSd5nIqWIFXyf9iA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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