Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '21b7876483274125de1e6ab8328eebf87fe968376f1eff5b5c13fc1dabf53bf6' 
  AND token = 'wu4Oxav47nSZ9ExXgt+oIEzkL5z8Vl8fC8rHZoB7RSM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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