Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ca92f6208d2323bab5aa778e695cf4313a900b30f1d9d10aac49f2fae96fae5e' 
  AND token = 'qy8syeOC23ShXpojOichY43kvOYrvQwdxFynjGoNQXk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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