Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f449d85729901163367f4dc88a7fb74b00b44f65750343c8b275aa504674d308' 
  AND token = 'YBgI93UPBe6xnTirTSaV/orpQasK8zhBtlzDZbrU8oc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00048

JSON explain

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