Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '054734741318e85657547f5260f51e4d7af347f97cf235609747d0b6d27f01d7' 
  AND token = 'PV6cU283MLJYZvXI0Kos7JMqbihz7rsocoX+zsYZo2U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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