Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a59a7105a3bf8bfb616466f48a7ab60f8dcd8d55a722fee0e74205e1215b473c' 
  AND token = 'rM0o798s4oSPAB4zu6vF0uMGy7r4MtaVip9WWN2U5pU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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