Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '212ad92922dbfc1581a92107e2766b04712f9fdf63565613c43bc1b9ce9ef518' 
  AND token = 'wLrW+AIe4trk3G9E5KP8ZBKSGl2t1hhvfmN44SkN/+I=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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