Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1132381c773192e8382e875387239dde27ac447dee4eba8b2e3e0ac3717f31da' 
  AND token = 'v7pkEsgvbA95F34zqTqGHlrT53LaqKVBigKh1+a6d1g=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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