Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'aa5dd826a2c821a402adb779f4fc23bd2f0c72a66b7c1f2ec48b97cf1426c397' 
  AND token = 'SXToFbWDGGyq1D0tZAyHZqq8fkOmXyGn2JbrEN4Q0/w=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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