Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '43497ef7dee2fd7dae016db9e7617ede95a5a07ebbeb6b050ec172b854a1c9d4' 
  AND token = 'F9tL6PyfDJ72NJT5c3ZhtjzzUdNiTHJDXeci7v36W3c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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