Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '11f88e8d528f064d8463fcdf130ae511fab12145dbc87319aca1da2564996526' 
  AND token = 'j0v85KFm5Sw5Nmn1AVlmi9jsCkIpg6WPESKPs7SSCqY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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