Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e557e1a6306f29bd25bf45c08a857bf885ee31b520538d30005baaeea15622f3' 
  AND token = 'bUg0Z2hwA508OZZWDdnGHgHus8AzMB3kWtRJzhnUeFM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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