Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e0bab8eb9b3ab15b20adc2b9094cb94de563734a3b441f3a0a2ddec6f34d656f' 
  AND token = 'ju/WRdAHURLwrxoEqotJhLYwds4a77BsTe7TmNO5n8w=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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