Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7ff53fcc1a4c68d868d7f13079299153baa3a63805878d5c07a689a3817375a3' 
  AND token = 'l4eJeFUukK0puf1RwNYjuhkidW17fCmyQ9iGB4PffOQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00048

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}