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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '573bca066f572712e111d44d31e21a63fbaad860f0a63bc55731ea6a591ab720' 
  AND token = 'Utz9NCH75zQvz7sbhDUiQdEBWSexSTJ9gqbXXBVZmZo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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