Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4add216314f757bca19709e6952934c3145a1c17cfb1c88d99dd56fda575434e' 
  AND token = 'vRnA4P4UI5iSaKNVZuKahtsIbg/9s8MMrrve1el+fU4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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