Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c3d00b66eb7d257a6aa861cb329cad66c6400ef61f7bfed1c470565b696d1aa2' 
  AND token = 'Thz0O3dXJV5h6TopvVArg3TTG5KibU8a6xfEHIKFrhQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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