Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = '77d8e870e1d30b7ea0c389902f21921a2eaf8d563de1de460f71bc202b5f16ae' 
  AND token = '0nf+k41uf6x5pxwy5rtyAr3SMBHpBpUXj18pcvt8Ta8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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