Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9660876a10a92c5ba98fd4e8f759e082bffc368cd8a63e919f168346bee52229' 
  AND token = 'Scd0Z+rBE4MLwy5fNvisfpu8mSY7PG7jx6Y3gjTxGmM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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