Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1a1e8394d03bf057d67ad97bacc0ee6a5b11c53205d7cf8198e55323ce5b18ff' 
  AND token = 'hkdexmR/sPJyuEeo6ux1T0pW1e/7HTuhfl5n6DybnRA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00013

JSON explain

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