Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2e57244fc37b35a576c87dd64c0407ef8b297c7e6f12618635688a7b19afaebf' 
  AND token = 'hPZceBPf7vDTlrLSpdxA+EYgZSdsEnC53HNW9yuwlOs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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