Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2218a374b957fb6bdac16e9dd801925e363902be6c646b0b3b507be2f9ce2a11' 
  AND token = 'tMM6+eQp0I/5VHn6YLJbrTK73RTyhWd9xl+gn49U/58=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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