Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bfa5871ab0880c8a19465c0a628cbf85976d8feb549dd69628a3d366228781b6' 
  AND token = 'fm92IoSVyXG4lLK+DYtyYEYL/J3kEaDnFqRvRPsVC0Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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