Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '43d13dd7a75a48a151e096877b4b47441b7c2e6ab1696977f226907bf7caf18f' 
  AND token = 'WsmBDDwqD1j5Hk5+S59Be5aftp/++R1z/MfQhfWQpLI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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