SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '94961e6be139e285908df091e9a2b1650edaa40c05845fb8e36e8127836073c8' 
  AND token = 'xqYU1ecmw0dYY0CGoIKE58ZDik4TMryilKdZ9sWGmFc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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