Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9815227d9abfd70078eab6d4536c79cc7771137a0a8f4c5b2aae0a419f1a67cf' 
  AND token = 'PATjqhrOOkPOlgjdUALdV5jxEwOjmAJKuMDuba+tz2s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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