Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8634e0a316d8bcdf71babc515cce0b0fa41e1cb854ef2956f74b8b27fa21c1f5' 
  AND token = 'yW6eI5RZklpAewkTtWA2n2AH5BKD9b1H/V2NC/uDZvg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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