Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '66e6c1477c06816c129c081576816f5dfa4ce4cdd5cf72df9fced29ce7b322bc' 
  AND token = 'B6d/gm4MyfYPbuHn62LiujU8Al0GT22n4EYZwrdJqzI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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