Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b01d7abc3f3d68d3c540184828f32c70a36989320c682e9b57c80fc8ffe3d176' 
  AND token = '1hs2+mxk6Z2oebM30RaHfy5AE5+qmOZYlVT6U93QstQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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