Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '25cdf5b1b672efea616dd5fe7682fe28c2e4bc6b6f44a9b301f77625e35469d1' 
  AND token = 'AYtb3lkt21lhC+Sc946OkvU92ciktYAYLGNy3yRj1X0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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