Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a05fc3797419698cfd6477c6875eba89939bb6878f24edeaa72db66129a2fde2' 
  AND token = 'aShsb1YQpkTSkCHuh/rBrr3bbIyTG16moOuLI8u70vc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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