Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '27394c1a524873c858e5514e5f7489432fad0f9a82a24d2d2ebd44b072808ebe' 
  AND token = 'LzA0YUHxaO5+GV0tw7fRYgoSyo2EPKfIx1N77Ui9gY0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00053

JSON explain

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