Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cfa06cacc6901b801433017e07b69f209a5b2e67cc3ff015de8352b7bcd1023d' 
  AND token = 'WboFQK3KotgJa3HomY4nppoAtVVpJOvvtIDdsi7mvbs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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