Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '60615cf6086a040babdf17e6268ad962ba9a3ee67e5dbd252559932e71673d13' 
  AND token = 'g+yREVylRbv02ngy9HIRNhWJJS1QowNLQ892Ldt1K40=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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