Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f0e098d34c7bdb2b3a43ab3d32fd3184b3166858dea93c37d6f99b647b054736' 
  AND token = 'RB3lUh5EZiRtn77O+Nxut2SWUbF7pHm5vcllyWN7EOo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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