Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '67beef45d94c78c657ac2cb2a36cbe3e507583946cbffc72cfdb4582e9380fb1' 
  AND token = 'EWWd3QnqY5Vor5KlF9K1hm9yZLVZqrYr1+I54h1ej/c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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