Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8163244f26fee0e01d9d343bc828223f4c5497b0e0ea6e3a842dadcd0dedeb4f' 
  AND token = 'Jbo0NIryPkcpLG//6E/sWfcOqC7gjA7zxigtqGUHdyo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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