Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ea79389a1f30ba1fb005040c45a1407d59bb3be076746b615b1b09202938086b' 
  AND token = 'SJin3eX06Esm5eTtj7r4+t70MgnftHQ5yub9KlslCXY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

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