Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e82d6f5f2ed14618abe05f6b7064c6771c5c228f4a4fab37dc0723754497e158' 
  AND token = 'Te8ACwM49rWhS5UZaiqjl3im98Sn6SR/NIQ7QImwdmA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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