Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '675b8873affa6f468416e5f058cb13c1ffeebe16bd972a61854de8abf1b28c06' 
  AND token = 'WhPOt6Lu6/Nex+Vea33b6TUp58XzF3TSym5S6J99HjQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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