Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2f11c976fc087aa245f4957164b12b30e9449a242adb1cfe0e3b901244e81791' 
  AND token = 'NheUfy7Fmvlfl+D8xt4WLM2fUNn8c9O8EdJcImUtXsg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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