Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'eefda9421c8a2e0e244f53a2f9772427afe8f1a290468d847f2242d92d4006de' 
  AND token = 'RvEGQImkgjF0kN7n63mZaOv1jPuEfYDXvMQAI6wbHeg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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