Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '896ec547e8616ac5c71b188dbfeb24c3d208a35bc29b1b1477369dabdc942650' 
  AND token = 'Db86Vs/886cdP2S+sBtNxFpqnUYubkiTdtADXV9hqBQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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