Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd234fb1f8c4e16d7d473213259e2177306a024a8a66e814276ab033e43b84334' 
  AND token = '6eAoLvPu6CAd1vU4bNs7PZUjwJrmvXGlUCstIOds8n4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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