Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f48d5a2aaadc92633002659cc65245af74289e5a0f782193371086b9b6780273' 
  AND token = 'tId4wfDsKmLWz9l0Bk7O67haFsXUOd8xTHykcHpNRNk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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