Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'd81f61b20e4885774f271f881a812472e499d7f1bfb7cd8e2d9909113f5db4cf' 
  AND token = 'OAEJA8k1aRKhOKU5B6XE9+mtI8cQllEx6X7HzDD5Fko=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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