Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9ac177058b885757a8d4e0a52f2593dd34286cfb6d7493c90e66450c25c596cf' 
  AND token = 'Xpvzx9BWhTyno0u8Z5Y8bB6jpl8Hr0x9PqSeJ52jkWA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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