Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '05c72967c2f77a21a01729901b0de2ed166f350bb698d972b4c824f96077b9c9' 
  AND token = 'FwD1CkiFxgDnMetjhn7Isd4bLG5MU/m5x6zXgM9+3Js=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00050

JSON explain

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