Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '43f3fd7ae9e19e95365e68bbf1ba9f7cfd9839b28fccc8ee890bb323dd288780' 
  AND token = 'pP+m31Y8feKqHieXv4fWrltTvwJ6SJdxuGMdfdUj06s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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