Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd7fc98d7c80264059c8aad6d9d7b9ccb323e0188e52870cc64291420ac7d19fe' 
  AND token = 'kGawzVVe6xBjaWKru9ykeJrOn7nJpRBBdEziKNn4uBE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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