Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '24ef58d59aac74b35edd8ed6434e627177e9b208dfcef4bd9bb439f9156612eb' 
  AND token = 'u6qgoF6XmjKwnXq/Q1II92ID5Wis6D+f0ycQpQP61AY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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