Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3c912399ea07bd1965f68a42ca369b5566b9e56daaee9a7254ed6f143a551055' 
  AND token = 'qFDaeTqrSn1orGdkDw/GUgxHxHMz7ZATmAwJGiEDOrE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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