Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a2f3961a4bf11188dee3c315a1666c224387c71e1f0691d2e01b00dc71ace6aa' 
  AND token = 'tKFOVJfixs6oId4bJEaBtMbSH+n+PCRqM52d9ojXrJs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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