Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '374c0fb502eb9f8f5f51a00cfca8a6ce2f3294201621974c65edd7003945c1bd' 
  AND token = 'Fdu6+Vhf4N/X37IOHeYWiHpjf/vuLO3ZBQU8R6xiO0c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.07593

JSON explain

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