Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6d563457be8f35e9084ba166c3336b8e82b0b841aa09cc6aa838979273c73adf' 
  AND token = 'W2MMOHSIFCE6qF1M3pd+QqWQ+jteaAzyxN4xbOmHOsc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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